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| author |   Pavel Begunkov <asml.silence@gmail.com> | 2021-08-09 13:04:09 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2021-08-23 13:07:59 -0600 |
| commit | a2416e1ec23c6b79010d03d69c0e4e035339b4ad (patch) | |
| tree | ce91d7608bb518613851c1fb6c5dad37e5188871 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | io_uring: refactor io_alloc_req (diff) | |
| download | wireguard-linux-a2416e1ec23c6b79010d03d69c0e4e035339b4ad.tar.xz wireguard-linux-a2416e1ec23c6b79010d03d69c0e4e035339b4ad.zip | |
io_uring: don't halt iopoll too early
IOPOLL users should care more about getting completions for requests
they submitted, but not in "device did/completed something". Currently,
io_do_iopoll() may return a positive number, which will instruct
io_iopoll_check() to break the loop and end the syscall, even if there
is not enough CQEs or none at all.
Don't return positive numbers, so io_iopoll_check() exits only when it
gets an actual error, need reschedule or got enough CQEs.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/641a88f751623b6758303b3171f0a4141f06726e.1628471125.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions